“chalk”的概念、定义、翻译、参考文献-科学参考

单词	chalk
释义	chalk Encyclopedia 工学[矿物材料]释 chalk白垩主要由显微粒状石灰质岩石和海生生物（如贝壳、有孔虫等）的遗骸以及颗粒细小（0.01～0.0005毫米）的方解石组成的一种生物化学沉积岩。理学白垩释 chalk白垩白色疏松土状的石灰岩。
随便看	network politics network polymer network processor network program host network programming network promotion network propagation dynamics network protection network protocol network protocol analyzer network protocol security network pruning network psychological warfare network public network publications network public opinion network public opinion guidance network public opinion research and judgment network pyramid sales network range network real-name system network real-time kinematic positioning network reconnaissance network reconstruction network recruitment

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